| Idar-Oberstein to Monchengladbach | 109.89 mi (176.85 km) |
| Idar-Oberstein to Monschau | 75.02 mi (120.73 km) |
| Idar-Oberstein to Montabaur | 55.08 mi (88.64 km) |
| Idar-Oberstein to Moosburg | 226.00 mi (363.72 km) |
| Idar-Oberstein to Morbach | 11.39 mi (18.33 km) |
| Idar-Oberstein to Morfelden-Walldorf | 59.99 mi (96.55 km) |
| Idar-Oberstein to Morlenbach | 64.16 mi (103.25 km) |
| Idar-Oberstein to Morsbach | 81.79 mi (131.62 km) |
| Idar-Oberstein to Mosbach | 85.89 mi (138.22 km) |
| Idar-Oberstein to Mosigkau | 260.13 mi (418.64 km) |
| Idar-Oberstein to Mossingen | 119.86 mi (192.89 km) |
| Idar-Oberstein to Much | 83.37 mi (134.17 km) |
| Idar-Oberstein to Mucheln | 225.61 mi (363.08 km) |
| Idar-Oberstein to Muhlacker | 86.55 mi (139.28 km) |
| Idar-Oberstein to Muhldorf | 256.97 mi (413.56 km) |
